Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 | 1x 1x 22944x 22944x 120407x 5601x 11228x 26x 26x 26x 68804x 68804x 68804x 68804x 26x 26x 26x 68778x | /**
* @author Timo Lehnertz
*/
import { BoardPosition } from "./BoardPosition";
import { Heading, HeadingHelper } from "./Heading";
import { Vec2 } from "./Vec2";
/**
* Immutable ShiftPosition class representing a unique way of shifting on a board
*/
export class ShiftPosition {
public readonly heading: Heading; // the direction from wich the shift will start
public readonly index: number; // from left to right or top to bottom
public constructor(heading: Heading, index: number) {
this.heading = heading;
this.index = index;
}
public get shiftVector(): Vec2 {
return new HeadingHelper(this.heading).vec2.multiply(-1);
}
public static create(instance: ShiftPosition): ShiftPosition {
return new ShiftPosition(instance.heading, instance.index);
}
public equals(other: ShiftPosition): boolean {
return this.heading === other.heading && this.index === other.index;
}
private static checkOverflow(position: number, size: number): number {
Iif (position < 0) {
return size - 1;
}
Iif (position >= size) {
return 0;
}
return position;
}
public shiftPlayer(
playerPosition: BoardPosition,
width: number,
height: number
): BoardPosition {
const isXAxis =
this.heading === Heading.EAST || this.heading === Heading.WEST;
const playerAxis = isXAxis ? playerPosition.y : playerPosition.x;
const shiftAxis = this.index * 2 + 1;
if (playerAxis === shiftAxis) {
const increment =
this.heading === Heading.NORTH || this.heading === Heading.WEST
? 1
: -1;
Iif (isXAxis) {
return playerPosition.setX(
ShiftPosition.checkOverflow(playerPosition.x + increment, width)
);
} else {
return playerPosition.setY(
ShiftPosition.checkOverflow(playerPosition.y + increment, height)
);
}
} else {
return playerPosition;
}
}
}
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